无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

<blockquote id="q4k9p"></blockquote>

單項(xiàng)選擇題

The first requirement for logical troubleshooting of any system is the ability to （）.

A.collect all available data on a casualty
B.recognize normal operation
C.identify the probable cause of a symptom
D.isolate the faulty component

你可能感興趣的試題

單項(xiàng)選擇題

An electrical device which employs a stationary armature and a rotating electromagnetic field is used aboard ship as a （）.

A.magnetic amplifier
B.ship’s service alternator
C.three-wire DC generator
D.saturable core reactor

單項(xiàng)選擇題

As a general rule, the first troubleshooting action to be taken in checking faulty electric control devices is to （）.

A.draw a one line diagram of the circuitry
B.test all fuses and measure the line voltage
C.take megger readings
D.insulate the apparatus from ground